SWIFT ULTRAVIOLET OBSERVATIONS OF SUPERNOVA 2014J IN M82: LARGE EXTINCTION FROM INTERSTELLAR DUST
文献类型：期刊论文
| 作者 | Brown, Peter J.1; Smitka, Michael T.1; Wang, Lifan1,2 ; Breeveld, Alice3; de Pasquale, Massimiliano4; Hartmann, Dieter H.5; Krisciunas, Kevin1; Kuin, N. Paul3; Milne, Peter A.6; Page, Mat3
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| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2015-05-20 |
| 卷号 | 805期号:1页码:74 |
| 关键词 | dust, extinction supernovae: general supernovae: individual (SN2014J, SN2011fe, SN2012fr) |
| 英文摘要 | We present optical and ultraviolet (UV) photometry and spectra of the very nearby and highly reddened supernova (SN) 2014J in M82 obtained with the Swift Ultra-Violet/Optical Telescope (UVOT). Comparison of the UVOT grism spectra of SN 2014J with Hubble Space Telescope observations of SN2011fe or UVOT grism spectra of SN 2012fr are consistent with an extinction law with a low value of R-V similar to 1.4. The high reddening causes the detected photon distribution in the broadband UV filters to have a much longer effective wavelength than for an unreddened SN. The light curve evolution is consistent with this shift and does not show a flattening due to photons being scattered back into the line of sight (LOS). The light curve shapes and color evolution are inconsistent with a contribution scattered into the LOS by circumstellar dust. We conclude that most or all of the high reddening must come from interstellar dust. We show that even for a single dust composition, there is not a unique reddening law caused by circumstellar scattering. Rather, when considering scattering from a time-variable source, we confirm earlier studies that the reddening law is a function of the dust geometry, column density, and epoch. We also show how an assumed geometry of dust as a foreground sheet in mixed stellar/dust systems will lead to a higher inferred RV. Rather than assuming the dust around SNe is peculiar, SNe may be useful probes of the interstellar reddening laws in other galaxies. |
| 学科主题 | 天文和天体物理 |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics |
| 研究领域[WOS] | Astronomy & Astrophysics |
| 关键词[WOS] | HUBBLE-SPACE-TELESCOPE ; SMALL-MAGELLANIC-CLOUD ; IA LIGHT CURVES ; SN 2014J ; ABSOLUTE MAGNITUDES ; CIRCUMSTELLAR DUST ; DECLINE RATE ; TIME-SERIES ; GALAXY M82 ; MILKY-WAY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000354991300074 |
| 源URL | [http://libir.pmo.ac.cn/handle/332002/14884]  |
| 专题 | 紫金山天文台_南极天文中心 |
| 作者单位 | 1.Texas A&M Univ, Dept Phys & Astron, George P & Cynthia Woods Mitchell Inst Fundamenta, TAMU 4242, College Stn, TX 77843 USA 2.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Jiangsu, Peoples R China 3.Univ Coll London, Mullard Space Sci Lab, Dorking RH5 6NT, Surrey, England 4.Inst Astrophys Spatiale & Fis Cosm Palermo, I-90146 Palermo, Italy 5.Clemson Univ, Dept Phys & Astron, Kinard Lab Phys, Clemson, SC 29634 USA 6.Univ Arizona, Steward Observ, Tucson, AZ 85719 USA 7.Penn State Univ, Dept Astron & Astrophys, Davey Lab 525, University Pk, PA 16802 USA |
| 推荐引用方式 GB/T 7714 | Brown, Peter J.,Smitka, Michael T.,Wang, Lifan,et al. SWIFT ULTRAVIOLET OBSERVATIONS OF SUPERNOVA 2014J IN M82: LARGE EXTINCTION FROM INTERSTELLAR DUST[J]. ASTROPHYSICAL JOURNAL,2015,805(1):74. |
| APA | Brown, Peter J..,Smitka, Michael T..,Wang, Lifan.,Breeveld, Alice.,de Pasquale, Massimiliano.,...&Siegel, Michael.(2015).SWIFT ULTRAVIOLET OBSERVATIONS OF SUPERNOVA 2014J IN M82: LARGE EXTINCTION FROM INTERSTELLAR DUST.ASTROPHYSICAL JOURNAL,805(1),74. |
| MLA | Brown, Peter J.,et al."SWIFT ULTRAVIOLET OBSERVATIONS OF SUPERNOVA 2014J IN M82: LARGE EXTINCTION FROM INTERSTELLAR DUST".ASTROPHYSICAL JOURNAL 805.1(2015):74. |
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来源：紫金山天文台
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